#! /usr/bin/env python
try:	
	import psyco
	psyco.full()
#	print "use psyco..."
except ImportError:
	print "psyco not installed do continue as usual"
	pass # psyco not installed do continue as usual


def fib(n):
	if n < 2:
		return n
	else:
		return fib(n - 1) + fib(n - 2)
fib(30)

